/Engine/Source/Runtime/Renderer/Public/PrimitiveSceneInfo.h
Lod data used for runtime virtual texture page rendering. Packed to reduce memory overhead since one of these is allocated per primitive.
struct FPrimitiveVirtualTextureLodInfo
uint16:  1
CullMethod
Culling method used to remove the primitive from low mips of the runtime virtual texture.
uint16:  3
CullValue
Value used according to the CullMethod.
uint16:  4
LodBias
Bias to use for Lod calculation in the runtime virtual texture.
uint16:  4
MaxLod
Maximum Lod for primitive in the runtime virtual texture.
uint16:  4
MinLod
Minimum Lod for primitive in the runtime virtual texture.